Material



UNITED STATES ALFRED FORD, or

PATENT OFFICE.

LONDON, ENGLAND, ASSIGNOR Oh ONE-HALF TO JACOB AYTON' ARCHER, OF SAME PLACE.

MATERIAL APPLICABLE AS A WATER-PROOF COVERING FOR ROOFS, dc.

SPECII'ICATILN {arming part of Letters Patent No. 342,345, dated May 25,1886.

Appli -ation filed June 16. 1885. Serial No. 168.899. (Specimens) Patented in England May 15, 1885. No. 5,993; in Germany June t), 1r:8:' No. 33,790; in France June 10, 1,885, No. 169,480, and in Canada July 14, 182 5, No. 22,081.

at London, England, gentleman, haveinvented a new and useful Improved Material Applicable as a \Vater-Iroof Covering for Roofs f and oth'ersuch like Purposes, of which the 1 following is a specification.

The object of this invention is to provide a water-proof material which will be but little liable to be injured by oxidation by the atmosphere, and which is light, flexible, and transparent. For this purpose I employ' wirega-uze, preferably iron, coated with a tough water-proof and elastic varnish or medium of the kind hereinafter described, so as to cover the wire and close the meshes, To so coat the sheets of wire-gauze with the varnish or medium, I repeatedly the::;. ii.-.o the varnish, and after each dipping allow the var nish to dry until the meshes of the wire-work have been perfectly filled and the wire covered and the whole rendered water-proof.

The varnish or medium I find it advantageous to employ is pure linseedoil, which has been previously oxidized and enducd with drying powers, andlthickened in a suitable manner-such as'the following, Vl lGllGOlJ: I take refined linseed-oil, and having imparted to it the property of drying quickly by any well-known methodsuch as by subjecting it to the action of litharge or other siccative-I allow it to rest until it has become clear, and then subject it to agitation by means of an airblast in a closed tank, (or by any other suitable mode-such as by long exposure to the atmosphere and sti rri ng)-u ntil it has assumed a consistence of cream, or thereabout. The oil so treated is then tit for use for the abovenamed purpose.

Wire-work so prepared is so fficientl y translueent'to admit light, is w t prt )f and sunproof, comparatively inexpensive, and can easily be applied to the frame-work of a roofing, or of windows, or used for other such like purposes, and as the improved material is not liable to be injured by unequal expansion or contraction between its component parts (a condition which does not exist in iron and glass roofs) it is specially applicable for rooting purposes. The material can be colored, without ailectingits transparency, by the use of any of the well-known transparent colors.

I have described the use of a tarnish or medium prepared from linseed-oil, as above named, as giving excellent results in practice; but it will be obvious that other varnishes or waterproofing mixtures may be employed, although with iuferior results.

In some cases, where the roofing might be exposed to accident by the falling upon it of stray pieces ol'hot cinder or wood, I coat the surface with powdered glass in the following manner: Ieither mix the glass, in a fine state of division,with the last coat of-material with which I dress the wire, or while the latter is in an adhesive state I brush powdered glass over the surface.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is- 1. A water-proof and translucent covering for roofs and for other like purposes, consisting of wire-gauze coated with an oxidized compound of1inseed-oil and lithargc or other siccative, which covers up the wire and fills the meshes, substantially as described.

2. A water-proofandtransluccnt covering for roofs and for other like purposes, consisting of wire-gauze coated with an oxidized compound of linseed-oil and litharge or other siceative, which covers up the wire and tills the meshes, and with powdered glass, substantially as described.

ALFRED FORD.

Witnesses:

B. BRADY, A. ALBU'IT. 

